Invasive and Exotic Species of North America

any species, including its seeds, eggs, spores, or other biological material capable of propagating that species, that is not native to that ecosystem; and whose introduction does or is likely to cause economic or environmental harm or harm to human health.

Plants

Insects

Pathogens

Other Species

A Field Guide for the Identification of Invasive Plants in Southern Forests

Update of Jim Miller's book now providing information on accurate identification of 56 plants that are aggressively invading forests of the 13 Southern States at alarming rates.

Cogongrass (Imperata cylindrica) is one of the worst invasive plants we have in the South. This link contains information and resources for Extension agents to conduct a short informational training program for their county road crews. More info...

This guide is intended to aid foresters and managers in the southeastern United
States in developing management plans and managing forests threatened by invasive
plants. This guide integrates identification of invasive plants, potential mechanisms
for spread (natural seed or vegetative production, or human induced spread by cultural
practices) and a suite of silvicultural management/control practices. More info...

TNC's Global Invasive Species Team (GIST) was disbanded in March 2009. The GIST web site including the Element Stewardship Abstracts, images and INVASIPEDIA were in danger of becoming lost. Invasive.org in collaboration with the Global Invasive Species Team, is pleased to announce that the GIST web site has been archived. More info...

The Southern Region Task Force for assessing nonnative invasive species (NNIS) was assembled in August 2006 to prioritize NNIS posing the highest threats to forests and grassland ecosystems in the South. The Task Force collaboratively compiled a list of the most potentially damaging invasive species from multiple existing databases and through surveys of Forest Service regional staff. More info...

Regional Maps of occupation and coverage estimates are accessible for 33 recognized nonnative plants invading forests of the 13 southern States using U.S. Forest Service's Southern Research Station Forest Inventory and Analysis data. More info...